<template>
    <div>
        <!-- 面包屑导航区域 -->
    <el-breadcrumb separator="/">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>数据统计</el-breadcrumb-item>
      <el-breadcrumb-item>数据报表</el-breadcrumb-item>
    </el-breadcrumb>
    <!-- 放入图表区域 -->
    <el-card>
      <div id="main">

      </div>
    </el-card>
    </div>
</template>
<script>
import * as echarts from 'echarts'
import _ from 'lodash'
export default {
  data () {
    return {
      // 需要合并的数据
      options: {
        title: {
          text: '用户来源'
        },
        tooltip: {
          trigger: 'axis',
          axisPointer: {
            type: 'cross',
            label: {
              backgroundColor: '#E9EEF3'
            }
          }
        },
        grid: {
          left: '3%',
          right: '4%',
          bottom: '3%',
          containLabel: true
        },
        xAxis: [
          {
            boundaryGap: false
          }
        ],
        yAxis: [
          {
            type: 'value'
          }
        ]
      }
    }
  },
  methods: {

  },
  created () {

  },
  async mounted () {
    // dom元素已经被初始化完毕
    var myChart = echarts.init(document.getElementById('main'));
    const { data: res } = await this.$http.get('reports/type/1')
    if (res.meta.status !== 200) {
      return this.$message.error('获取数据失败')
    }

    // 准备数据
    const result = _.merge(res.data, this.options) // 数据合并使用lodash
    myChart.setOption(result);
  }
}
</script>
<style lang="less" scoped>
#main{
  width: 600px;
  height: 400px;
}
</style>
